<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>雨滴demo</title>
    <style>
        body,canvas{
            margin:0;
            padding:0;
            display: block;
        }
    </style>
</head>
<body>
<canvas id="canvas">
    你的浏览器不支持canvas
</canvas>
<audio src="mp3/rain.wav" id="audio_rain"></audio>
</body>
<script src="js/rain.js"></script>
</html>